September 2022


Serving Cleveland County with the most up to date gardening, lawn, landscaping, and horticulture information.

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Cleveland County Extension Office
601 E Robinson St
Norman, OK 73071




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Cleveland County Horticulture
In this issue...

Crape Myrtles

Plant of the Month
Garden Tips
Seasonal Eats
Upcoming Events

Volume 5 | Issue 4

Recent articles from...

Dishing the Garden Dirt!
The Cleveland County Master Gardener Association Blog

The Cleveland County Master Gardener Association started a blog! Dishing the Garden Dirt will provide readers with up to date and useful gardening, horticulture, and environmental information. New articles will be uploaded regularly.

Crape Myrtles Are Versatile in the Garden

by Judy Kautz, OSU Extension Master Gardener

Oklahomans definitely have a love affair with our crape myrtles; in many areas you can see them on practically every street. And why not? Few plants can match the crape myrtle's spectacular summer flowers, colorful autumn foliage, and attractive sculptured wood.


September Plant of the Month

Image from North Carolina Extension Gardener Plant Toolbox


Bright yellow plumes for the end of summer

Solidago, or goldenrod, is a group of herbaceous perennial plants in the aster family. Several species available are native to North America. The bright yellow blooms appear towards the end of summer and persist through fall. The bloom time makes it a great pollinator plant, particularly for migrating monarchs. It is easy to grow; the plant prefers full sun and well-drained soil. Goldenrod is often mistaken for ragweed, which causes allergies. Being an insect pollinated plant, rather than a wind pollinated plant, it has no affect on allergies.

Garden Tips for September

  • Choose spring flowering bulbs as soon as available

  • Plant cool-season annuals like pansies, ornamental cabbage or kale, snapdragons, and dusty miller when temperatures begin to cool

  • Trees and shrubs can be planted in September, as it's easier for plants to become established in our winters rather than our summers

  • Watch for fall specials at garden centers and nurseries; fall is a great time to plant many perennials

  • Continue to fertilize and deadhead containers; most will last until the first frost

  • Take cuttings to overwinter indoors

  • Watch for and control any late infestation of tree webworms

  • Begin to reduce the amount of light on outside tropical houseplants by placing them under shade trees before bringing them indoors

  • September is a great time to plant cool-season vegetables

  • Last nitrogen fertilizer application on warm-season grasses should be applied no later than September 15th

  • Winter broadleaf weeds, like dandelion, will begin to emerge in late September, which is also the best time to control with a 2,4-Dtype herbicide

  • White grub damage can become visible this month; apply appropriate soil insecticide if white grubs are a problem

  • Preserve the color of your garden by creating dried arrangements from your favorite flowers

  • Make sure to take pictures of your gardens, so you can document the year's successes and frustrations

Eat Seasonally

In-season produce is fresher, cheaper, more nutritious, and better for the environment. These are some of the seasonal crops for September:

Upcoming Events

Beyond The Backyard: A Suburban Homestead Conference

Date & Time: September 24th, 9:00am to 2:30pm

Location: Cleveland County Wellness Square, 210 James Garner Ave, Norman, OK 73069

The Cleveland County OSU Extension Service is excited to present BEYOND THE BACKYARD: A Suburban Homestead Conference. Hosted at the Norman Farm Market and Cleveland County Wellness Center, this day-long workshop will cover different ways to be more self-sufficient at home! Presentations will include food preservation, edible landscaping, small grains in small spaces, and more... read more

Master Gardener Community Education Class | Oklahoma Proven

Date & Time: October 15th, 10:00am to 11:00am

Location: Cleveland County OSU Extension Office, Classroom C, 601 E Robinson, Norman, OK 73071

The Cleveland County Master Gardener Association, as part of OSU Extension, aims to present research-based information to the public... read more

Oklahoma State University, State, and Local governments cooperating. The Oklahoma State University Cooperative Extension Service offers its programs to all eligible persons regardless of age, race, color, religion, sex, sexual orientation, genetic information, gender identity, national origin, disability, marital or veteran status, or any other legally protected status. OCES provides equal opportunities in program and employment.